2001至2014年青藏高原蒸散时空变化特征  

作　　者：湛青青[1] 

机构地区：[1]贵州省第一测绘院,贵州贵阳550025

出　　处：《科技资讯》2017年第35期218-219,共2页Science & Technology Information

摘　　要：蒸散发是水热循环的重要环节,分析蒸散发的时空变化对于理解区域气候变化和水资源具有重要的作用。本文基于MOD16 ET数据集分析我国青藏高原2001—2014年蒸散时空格局,得出以下结论:(1)青藏高原地区的多年平均蒸散量在空间上呈现明显的分异特征,藏南谷地和藏东地区的蒸散最大,藏北高原和巴颜克拉山以北的蒸散发最小。(2)2001—2014年,青藏高原陆面蒸散发保持相对稳定。藏北高原和金沙江、澜沧江和怒江流域的线性变化率为负,青海省境内的黄河源平原及藏南谷地的为正。(3)青藏高原陆面蒸散线性变化率既受气候变化影响,又受人为活动干扰。Evapotranspiration is an important part of hydrothermal cycle, Analysis of temporal and spatial changes in evapotranspiration plays an important role in understanding regional climate change and water resources. Based on the MOD16 ET data set, this paper analyzes the pattern of evapotranspiration in the Qinghai-Tibet Plateau from 2001 to 2014, Concluded as follow：（1） The multi - year average evapotranspiration of the Qinghai - Tibet Plateau region is distinctly different in space, The deepest evapotranspiration in the southern Tibet and the eastern Tibet, The northeastern plateau and the north of Bayan clara are the smallest.（2） From 2001 to 2014, The sediment transport on the Qinghai - Tibet Plateau remained relatively stable. Tibetan Plateau and Jinsha River, Lancang River and Nu River Basin, the linear rate of change is negative, The Yellow River Source Plain in Qinghai Province and the Valley of.（3） Linear Change Rate of Land Surface Evapotranspiration in Qinghai - Tibet Plateau Affected by Climate Change, And interference with human activities .

关 键 词：MODIS数据 蒸散发 空间变化 青藏高原 

分 类 号：P426[天文地球—大气科学及气象学]